Select all that apply.Which of the following expressions could you use to estimate 47% of 89?

1/2 · 90
0.5 · 90
0.47 · 89
90/2

Answers

Answer 1

Answer: Given:
47% of 89

Exact solution is : 0.47 * 89 = 41.83

Estimates: you round the number to the nearest tens.
47% can be 50% ; 89 can be 90

0.50 * 90 = 45

50% is the same as 1/2
1/2 * 90 = 45

90/2 is also applicable to estimate for the above figure. 90/2 = 45

Answer 2

Answer:

Answer:

The first and second one

Step-by-step explanation:

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The measure of an angle is 4y. find the measure of its complement.

Answers

180 should be the answer

URGENT!!!!!Find the distance on the coordinate system from the point (-3, 4) to the point (8, -7).

Answers

remember the pythagorean theorem?
this is like that
the distance is the hypotnuse

D= $\sqrt{(x2-x1)^(2)+(y2-y1)^(2)}$

D= $\sqrt{(8-(-3))^(2)+(-7-4)^(2)}$
D= $\sqrt{(11)^(2)+(-11)^(2)}$
D= $√(169+169)$
D= $√(338)$
D= $11√(2)$
aprox 15.55 units

The diagonal of a tv is 28 inches long. Assuming that this diagonal forms a pair of 30-60-90 right triangles, what are the exact length and width of the tv?

Answers

30-60-90

shortest leg is always x ; longest leg is always x√3 ; hypotenuse is always 2x

hypotenuse = 28 inches = 2x = 2(14)
shortest leg = x = 14
longest leg = x√3 = 14√3

The exact length and width of the tv would be 14 inches and 14√3 inches.

Answer:

14 inches by 14 square root of 3 inches

Step-by-step explanation:

Use angle difference identity to find the exact value.1. tan 15 degrees

2. tan -105 degrees

Answers

Hello,

1)
tan (a-b)=(tan a - tan b)/(1+tan a tan b)

15=45-30
tan 45°= (√2/2)/(√2/2)=1
tan 30°=(1/2)/(√3/2)=√3/3
tan (45°-30°)= (1-√3/3)/(1+1*√3/3)=(3-√3)/(3+√3)=(3-√3)²/6=2-√3

tan (-105°)=tan (75°)= tan (60°+15°)=(tan 60+tan15°)/(1-tan 60°*tan 15°)

tan 15°=2-√3
tan 60°=√3°
tan (-105°)=(√3+2-√3)/(1-√3*(2-√3))=2/(1-2√3+3)=1/(2-√3)=2+√3

What is 0.11625 written as a percent?

Answers

Answer:

11.625 %

Step-by-step explanation:

to convert the given number into percentage we need to multiply the given number to 100 to get the required percentage

0.11625 × 100 = 11.625 %

hence, the required percentage will be equal to 11.625 %.

Any fraction number can also be converted into percentage by just multiplying it by 100.

To convert that number into percent we should multiply that number with 100 or move the decimal place to right at two points.
0.11625 *100 =11.625 %
If it helped please mark as the brainliest answer. Hope it helped you.

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